Why is this Illinois series of races scheduled against USAC midget week?

Won't this hurt the sprintcar counts for midget week? Plus I now see POWERi has scheduled three of their midget shows against USAC and two against the Illinois deal.

What's up with that?
If I'd have known this before I probably would not have made my air and hotel reservations for Midget Week, as I'm not into seeing diluted shows. Aren't there enough weeks in the summer to plan these things better? Scheduling against each other makes the fan have to choose where they're going. I would love to go to the Illinois races as I could pick up a few new tracks, but with it running against Midget Week that isn't going to happen.
Also does anyone know what's running as the support division with the midgets at North Vernon?